Final answer:
The family's statement that indicates the need for further teaching is that they will limit physical activity to prevent fatigue.
Step-by-step explanation:
The correct answer is d) "We will limit physical activity to prevent fatigue." This statement indicates the need for further teaching because physical activity is actually important for managing sickle cell anemia. Regular exercise can help improve blood flow and prevent complications such as blood clots. It is important for individuals with sickle cell anemia to engage in moderate physical activity and avoid excessive fatigue.